From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Edwards Subject: Re: Is tty->receive_room no longer usable w/ SMP? Date: Fri, 14 Feb 2014 22:31:52 +0000 (UTC) Message-ID: References: <52FC1A14.5080004@hurleysoftware.com> <52FC427A.8050907@hurleysoftware.com> <52FCE506.2040801@hurleysoftware.com> Return-path: Received: from plane.gmane.org ([80.91.229.3]:39782 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752282AbaBNWcS (ORCPT ); Fri, 14 Feb 2014 17:32:18 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1WERIu-0003U0-GR for linux-serial@vger.kernel.org; Fri, 14 Feb 2014 23:32:16 +0100 Received: from dsl.comtrol.com ([64.122.56.22]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Feb 2014 23:32:16 +0100 Received: from grant.b.edwards by dsl.comtrol.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Feb 2014 23:32:16 +0100 Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: linux-serial@vger.kernel.org On 2014-02-13, Grant Edwards wrote: > On 2014-02-13, Peter Hurley wrote: >> There's no realistic way to single-source a driver across hundreds of >> kernel versions. > > Maybe not hundreds. Our current drivers only support 2.6.24 and > later. It turns out I was wrong on both counts. The oldest supported version is 2.6.25, not 2.6.24, and yes that is hundreds of versions. :) I got curious and counted: we currently have single-source support for 541 official Linux kernel versions. That's not counting current "rc" versions (which are now supported), or RedHat's backport abominiations (which occasionally require special support). Within those 541 versions there are only about five or six distinct incompatible API subsets to worry about, so it's not as impressive as it sounds. -- Grant Edwards grant.b.edwards Yow! HOORAY, Ronald!! at Now YOU can marry LINDA gmail.com RONSTADT too!!